如何将映射到在vim中打开的关闭文件？

I'm working with a particularly stubborn keyboard where the SHIFT key simply doesn't seem to stay down when I need it to, especially when I'm typing stuff that includes keys that are further towards the top of the keyboard. Typing '~' somehow almost always types '`', and typing special characters almost always leads to the corresponding numbers being typed eg. when I try to type '@' I get '2','4' for '$' and so onI'm working with a particularly stubborn keyboa